rrdtool performance tuning (fwd)

[Brooks Davis]

On Mon, Oct 29, 2007 at 11:13:09AM +0300, Dmitry Morozovsky wrote:
> 
> [hmm, after thinking a bit I decided it would be more appropriate here, in 
> stable@]
> 
> Dear colleagues,
> 
> any hints to tune rrdtool with ~30k rrd files (approx 2k target devices)?
> 
> machine is mostly IO-bound, showing 100% disk load with 8 or sometimes even 3 
> mB/s, 300-400 tps (it's 2 SATA300 disks in gmirror)

Store it on a memory file system and take periodic snapshots.  The format is
hopeless for large numbers of updates.  The ganglia port's startup scripts show
an example of doing this.

-- Brooks
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